package com.atguigu.order.service.impl;

import com.atguigu.base.ExceptionHnadler.CustomException;
import com.atguigu.order.entity.Order;
import com.atguigu.order.mapper.OrderMapper;
import com.atguigu.order.service.OrderService;
import com.atguigu.order.service.client.EduClient;
import com.atguigu.order.service.client.UCenterClient;
import com.atguigu.order.utils.HttpClient;
import com.atguigu.order.utils.OrderNoUtil;
import com.atguigu.utils.vo.CourseWebVoOrder;
import com.atguigu.utils.vo.UcenterMemberOrder;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.github.wxpay.sdk.WXPayUtil;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.math.BigDecimal;
import java.util.HashMap;
import java.util.Map;

/**
 * <p>
 * 订单 服务实现类
 * </p>
 *
 * @author ld
 * @since 2022-08-24
 */
@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Order> implements OrderService {

    @Resource
    private EduClient eduClient;
    @Resource
    private UCenterClient uCenterClient;
    //生成订单
    @Override
    public String addOrder(String courseId, String memberId) {
        //根据课程id获取课程信息
        CourseWebVoOrder courseInfo = eduClient.getCourseWebVoInfo(courseId);
        //根据用户id用户信息
        UcenterMemberOrder memberInfo = uCenterClient.getMemberInfo(memberId);
        Order order=new Order();
        order.setOrderNo(OrderNoUtil.getOrderNo());
        order.setCourseId(courseId);
        order.setCourseTitle(courseInfo.getTitle());
        order.setCourseCover(courseInfo.getCover());
        order.setTeacherName(courseInfo.getTeacherName());
        order.setMemberId(memberId);
        order.setNickname(memberInfo.getNickname());
        order.setMobile(memberInfo.getMobile());
        order.setTotalFee(courseInfo.getPrice());
        order.setPayType(1);
        order.setStatus(0);
        baseMapper.insert(order);
        return order.getOrderNo();
    }

    @Override
    public Map createNative(String orderNo) {
        try {
            //根据订单id查询订单信息
            LambdaQueryWrapper<Order> queryWrapper=new LambdaQueryWrapper<>();
            queryWrapper.eq(Order::getOrderNo,orderNo);
            Order order = baseMapper.selectOne(queryWrapper);
            //2 使用map设置生成二维码需要参数
            Map m = new HashMap();
            m.put("appid","wx74862e0dfcf69954");
            m.put("mch_id", "1558950191");
            m.put("nonce_str", WXPayUtil.generateNonceStr());
            m.put("body", order.getCourseTitle()); //课程标题
            m.put("out_trade_no", orderNo); //订单号
            m.put("total_fee", order.getTotalFee().multiply(new BigDecimal("100")).longValue()+"");
            m.put("spbill_create_ip", "127.0.0.1");
            m.put("notify_url", "http://guli.shop/api/order/weixinPay/weixinNotify\n");
            m.put("trade_type", "NATIVE");
            //3 发送httpclient请求，传递参数xml格式，微信支付提供的固定的地址
            HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/unifiedorder");
            //设置xml格式的参数
            client.setXmlParam(WXPayUtil.generateSignedXml(m,"T6m9iK73b0kn9g5v426MKfHQH7X8rKwb"));
            client.setHttps(true);
            //执行post请求发送
            client.post();

            //4 得到发送请求返回结果
            //返回内容，是使用xml格式返回
            String xml = client.getContent();

            //把xml格式转换map集合，把map集合返回
            Map<String,String> resultMap = WXPayUtil.xmlToMap(xml);

            //最终返回数据 的封装
            Map map = new HashMap();
            map.put("out_trade_no", orderNo);
            map.put("course_id", order.getCourseId());
            map.put("total_fee", order.getTotalFee());
            map.put("result_code", resultMap.get("result_code"));  //返回二维码操作状态码
            map.put("code_url", resultMap.get("code_url"));        //二维码地址

            return map;
        } catch (Exception e) {
            throw  new CustomException(20001,"生成微信支付二维码失败");
        }
    }
}
